16GB (4 X 4GB) DDR3 1600MHz PC3-12800 240-pin Memory RAM DIMM Kit for Desktop PC by NEMIX RAM at Amazon.com
CMS 16GB (2X8GB) DDR3 12800 1600MHz NON ECC DIMM Memory Ram Upgrade Compatible with HP/Compaq® Compaq Pro 6305 Small Form Factor Business Pc - A63 - Walmart.com